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The pattern printing of composite plastic bags is relatively complicated, so the effect of printing directly affects the quality of the plastic. The effect of pattern printing is closely related to the plate. Therefore, it is necessary to select a plate making factory with better technology and quality to complete the plate making, so as to avoid causing some trouble to the plastic printing in the future. The printing of polyethylene bags is relatively simple, and film blowing is the most important in the production process, There is a strong technicality in adjusting the specifications of the film, such as the width and the thickness of the film. If the card is not properly stuck, it may cause the film thin guide inspection to be unqualified products or the blown film is too thick, and the money of the excessively thick material will be lost. The machines used for film blowing production are also simple. Most of the machines used for composite bags are controlled by computers, so the accuracy is relatively high. Polyethylene bags and composite bags are not only different in production machines, but also different in materials and inks. Most polyethylene bags use surface printing ink, while

When shopping, general businesses will provide a shopping plastic bag for a family so that people can better carry and buy products. Especially in some large life supermarkets, plastic bags for shopping are relatively basic configurations, and even paid choices are also essential, so the demand is relatively large. So for the wholesale of plastic bags , I don’t know what problems need to be noticed? （1） The choice of manufacturer is very important When shopping plastic bags in a wholesale store, we must strictly control the selection of manufacturers, especially in terms of quality. There are many manufacturers of plastic bags in the market today, and one may search everywhere through the Internet. However, the selection of manufacturers here is very important. It is important to check the relevant qualifications of the manufacturers, whether they are formally registered, whether they have the production qualification of plastic bags, and so on. At the same time, one should also pay attention to the selection of some manufacturers with relatively higher brands, so that the credibility of the manufacturers is higher, and the quality of the corresponding plastic bags is guaranteed. And generally, the first manufacturer has the ability to design, produce

Everyone is familiar with plastic bags. Plastic bags of various colors and styles also glow in different fields. Here are some common styles of customized plastic bags, as follows: 1. Large and medium-sized customized plastic bags. According to the survey, most of the plastic bags selected by large and medium-sized supermarkets are based on the shoulder bag as the key interior design style, because that design scheme can facilitate customers to pack the goods they choose. On the other hand, biodegradation, thickening and environmental protection level are part of the relevance of plastic bags in shopping malls. Only this kind of plastic bag is generally charged according to the standard, which varies according to the specification and size. 2. General convenience bag for sales market. At this stage, this kind of customized plastic bag still belongs to the middle and low end. Due to the relative customization, this kind of packaging bag is relatively thin, and the material is relatively poor. The other color is more colorful, bright red, light yellow, and gray black. The color of the plastic bag selected by different stalls will have significant differences. To take a simple example, people who sell fruits and vegetables usually

Plastic bags can be said to be common in our lives. They are especially useful for shopping, shopping, garbage bags, etc. Do you know how plastic bags are made? Next, our plastic bag manufacturer will take you to know. 1. The process of printing plastic bags. The premise of plastic bag printing is the placement of plastic film and plastic plate. The above steps describe the blow-molded film with order specifications. It is time to start printing. According to the required printing plate pattern, the printing plate and blow molding are generally synchronized. That is to say, after the blow molding is completed, the printing plate should also be prepared. The printing plate generally takes about 4 days. The printing plastic bag is different from the color on one or both sides. For example, supermarket shopping bags, usually one or two colors are common on one or both sides, one color corresponds to one version, but different colors on both sides can be completely different, which is not good, for example, two colors have four versions on both sides. Plastic bag printing is generally intaglio printing, copper printing and offset printing. The printing unit sets the printing plate and roll

1. The self-sealing bag is too tight to open. We can use the friction force. The two friction forces are parallel to the bag mouth and act on both sides of the bag mouth in opposite directions. Under the action of friction, there will be one opening at both ends of the bag mouth. When you put a hard object in the mouth, the bag will open. Of course, be careful not to scratch the contents of the bag. 2. Self-sealing bag is a kind of packaging bag that can be pressed and sealed automatically. There are usually compact bags, keel bags, zipper bags, etc. 3. Self-sealing bags, also known as compact bags, bone-sticking bags, sealing bags, zipper bags, keel bags, are made of polyethylene and high-pressure linear polyethylene by blowing film and hot-cutting machine bags, which can be repeatedly sealed. Common materials include PE  PO  EVA, multi-layer composite zipper bag, etc. 4. Self-sealing bags can be used for internal and external packaging of various small items (jewelry, hardware, toys). Self-sealing bags made from food-grade raw materials can store all kinds of small foods, tea, seafood, etc., moisture-proof, anti-smelling, waterproof, insect-proof, and prevent things from scattering; Self-sealing bags can also

The pattern printing of composite plastic bags is relatively complicated, so the effect of printing directly affects the quality of the plastic. The effect of pattern printing is closely related to the plate. Therefore, it is necessary to select a plate making factory with better technology and quality to complete the plate making, so as to avoid causing some trouble to the plastic printing in the future. The printing of polyethylene bags is relatively simple, and film blowing is the most important in the production process, There is a strong technicality in adjusting the specifications of the film, such as the width and the thickness of the film. If the card is not properly stuck, it may cause the film thin guide inspection to be unqualified products or the blown film is too thick, and the money of the excessively thick material will be lost. The machines used for film blowing production are also simple. Most of the machines used for composite bags are controlled by computers, so the accuracy is relatively high. Polyethylene bags and composite bags are not only different in production machines, but also different in materials and inks. Most polyethylene bags use surface printing ink, while

Plastic bags can be said to be common in our lives. They are especially useful for shopping, shopping, garbage bags, etc. Do you know how plastic bags are made? Next, Jinan plastic bag manufacturer will take you to know. 1. The process of printing plastic bags. The premise of plastic bag printing is the placement of plastic film and plastic plate. The above steps describe the blow-molded film with order specifications. It is time to start printing. According to the required printing plate pattern, the printing plate and blow molding are generally synchronized. That is to say, after the blow molding is completed, the printing plate should also be prepared. The printing plate generally takes about 4 days. The printing plastic bag is different from the color on one or both sides. For example, supermarket shopping bags, usually one or two colors are common on one or both sides, one color corresponds to one version, but different colors on both sides can be completely different, which is not good, for example, two colors have four versions on both sides. Plastic bag printing is generally intaglio printing, copper printing and offset printing. The printing unit sets the printing plate and roll

　OPP bag is a kind of stretchable polypropylene plastic, which is actually a kind of plastic bag. Its characteristic is easy to burn. Flame condition: melt dripping, blue under yellow, less smoke from the fire, continue to burn. Oriented polypropylene (OPP): Oriented polypropylene (film), a type of polypropylene and bidirectional polypropylene (BOPP) O (orientation): mainly refers to the production process. Polypropylene (PP), polypropylene, but as general structural parts, corrosion resistant chemical equipment spare parts, electrical heating insulation With high transparency and fragility, the tongue stickers in the mouth after folding side seals of OPP single sheet can be used to tear and protect the skin surface. The cement seals after folding tongue are easy to use, beautiful and generous. They are widely used in clothing, food, printing, stationery, cosmetics, paper making and other industries. It can also print various patterns and punch butterfly holes and aircraft holes according to customers’needs. OPP bags have obvious advantages: 1. How nervous. The experimental data show that the sealing property of the new OPP bag is more than twice that of the traditional bag, which makes the product more moisturizing, fresh-keeping and fresh-keeping for longer time. 2. strong security. The synthetic technology and special